Tech Support and Application Notes Research notes on Cat5 extenders, Video over Cat5, Digital (Dynamic) Signage and fiber optics. Cable Guide by Extron (PDF) Using Cat 5 for Audio Video by Belden (PDF) Digital Signage Presentation by Minicom (Power Point) White Paper on Digital Signage by Minicom (PDF) Document on Benifits of Fiber over […]
Length of 2-Wire 70V line Cable Selection by: John Vellone The following will help you determine the correct cable for you 70 volt installation. Yes, size does matter! Every install is similar but different. Make sure you use the correct cable gauge in order to deliver maximum power to your speakers. The correct cable will […]
Tech Support and Application Notes Cable Power Loss VS Gauge and Length By John Vellone The following table demonstrates these percentage load of signal in speaker cables of different gauges and lengths with respect to matched amplifier and speaker impedance. Use this table to determine the correct gauge of speaker wire to use depending on […]
Power / Load Impedance for 100V, 70.7V, 50V and 25V lines by: John Vellone Load Impedance in Ohms Power Watts 100V Line 70.7V Line 50V Line 25V Line 1 10,000 5,000 2,500 625 2 5,000 2,500 1,250 312.5 4 2,500 1,250 625 156.25 8 1,250 625 312.5 78.125 10 1,000 500 250 62.5 15 666.6 […]
Tech Support and Application Notes By John Vellone In this section you will find various and helpful technical support notes, formulas common cable assembly information and application notes. You will also find notes from power point presentations presented by John Vellone Suggestions and ideas are welcomed. Please forward them to: john@vellone.com Read More Support Documents: […]
Distributed Audio By John Vellone There are two types of audio amplifier on the market. Constant Current Amplifier (like your home stereo amplifier), which have a low impedance output of either 8 ohms or 4 ohms, and Constant Voltage Amplifier (used for commercial distributed audio systems) which have a high impedance out put identifies in […]
